A large bouquet of yellow tulips lies on the surface on a white backgroundA large bouquet of yellow tulips lies on the surface on a white background
Still life from a cup of coffee on a dark table surfaceStill life from a cup of coffee on a dark table surface
A modern bomber cuts through the surface of the skyA modern bomber cuts through the surface of the sky
An interesting astronaut walking on the surface of the moonAn interesting astronaut walking on the surface of the moon
Coastal landscape with a hill, a water surface and a gray skyCoastal landscape with a hill, a water surface and a gray sky
Bright highlights on the background of the water surfaceBright highlights on the background of the water surface
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..